2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2012 The FreeBSD Foundation
6 * This software was developed by Edward Tomasz Napierala under sponsorship
7 * from the FreeBSD Foundation.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
35 #include <sys/types.h>
37 #include <sys/socket.h>
40 #include <netinet/in.h>
41 #include <arpa/inet.h>
57 bool proxy_mode = false;
59 static volatile bool sighup_received = false;
60 static volatile bool sigterm_received = false;
61 static volatile bool sigalrm_received = false;
63 static int nchildren = 0;
64 static uint16_t last_portal_group_tag = 0xff;
70 fprintf(stderr, "usage: ctld [-d][-u][-f config-file]\n");
71 fprintf(stderr, " ctld -t [-u][-f config-file]\n");
76 checked_strdup(const char *s)
91 conf = calloc(1, sizeof(*conf));
94 TAILQ_INIT(&conf->conf_luns);
95 TAILQ_INIT(&conf->conf_targets);
96 TAILQ_INIT(&conf->conf_auth_groups);
97 TAILQ_INIT(&conf->conf_ports);
98 TAILQ_INIT(&conf->conf_portal_groups);
99 TAILQ_INIT(&conf->conf_pports);
100 TAILQ_INIT(&conf->conf_isns);
102 conf->conf_isns_period = 900;
103 conf->conf_isns_timeout = 5;
104 conf->conf_debug = 0;
105 conf->conf_timeout = 60;
106 conf->conf_maxproc = 30;
112 conf_delete(struct conf *conf)
114 struct lun *lun, *ltmp;
115 struct target *targ, *tmp;
116 struct auth_group *ag, *cagtmp;
117 struct portal_group *pg, *cpgtmp;
118 struct pport *pp, *pptmp;
119 struct isns *is, *istmp;
121 assert(conf->conf_pidfh == NULL);
123 TAILQ_FOREACH_SAFE(lun, &conf->conf_luns, l_next, ltmp)
125 TAILQ_FOREACH_SAFE(targ, &conf->conf_targets, t_next, tmp)
127 TAILQ_FOREACH_SAFE(ag, &conf->conf_auth_groups, ag_next, cagtmp)
128 auth_group_delete(ag);
129 TAILQ_FOREACH_SAFE(pg, &conf->conf_portal_groups, pg_next, cpgtmp)
130 portal_group_delete(pg);
131 TAILQ_FOREACH_SAFE(pp, &conf->conf_pports, pp_next, pptmp)
133 TAILQ_FOREACH_SAFE(is, &conf->conf_isns, i_next, istmp)
135 assert(TAILQ_EMPTY(&conf->conf_ports));
136 free(conf->conf_pidfile_path);
141 auth_new(struct auth_group *ag)
145 auth = calloc(1, sizeof(*auth));
147 log_err(1, "calloc");
148 auth->a_auth_group = ag;
149 TAILQ_INSERT_TAIL(&ag->ag_auths, auth, a_next);
154 auth_delete(struct auth *auth)
156 TAILQ_REMOVE(&auth->a_auth_group->ag_auths, auth, a_next);
159 free(auth->a_secret);
160 free(auth->a_mutual_user);
161 free(auth->a_mutual_secret);
166 auth_find(const struct auth_group *ag, const char *user)
168 const struct auth *auth;
170 TAILQ_FOREACH(auth, &ag->ag_auths, a_next) {
171 if (strcmp(auth->a_user, user) == 0)
179 auth_check_secret_length(struct auth *auth)
183 len = strlen(auth->a_secret);
185 if (auth->a_auth_group->ag_name != NULL)
186 log_warnx("secret for user \"%s\", auth-group \"%s\", "
187 "is too long; it should be at most 16 characters "
188 "long", auth->a_user, auth->a_auth_group->ag_name);
190 log_warnx("secret for user \"%s\", target \"%s\", "
191 "is too long; it should be at most 16 characters "
192 "long", auth->a_user,
193 auth->a_auth_group->ag_target->t_name);
196 if (auth->a_auth_group->ag_name != NULL)
197 log_warnx("secret for user \"%s\", auth-group \"%s\", "
198 "is too short; it should be at least 12 characters "
199 "long", auth->a_user,
200 auth->a_auth_group->ag_name);
202 log_warnx("secret for user \"%s\", target \"%s\", "
203 "is too short; it should be at least 12 characters "
204 "long", auth->a_user,
205 auth->a_auth_group->ag_target->t_name);
208 if (auth->a_mutual_secret != NULL) {
209 len = strlen(auth->a_mutual_secret);
211 if (auth->a_auth_group->ag_name != NULL)
212 log_warnx("mutual secret for user \"%s\", "
213 "auth-group \"%s\", is too long; it should "
214 "be at most 16 characters long",
215 auth->a_user, auth->a_auth_group->ag_name);
217 log_warnx("mutual secret for user \"%s\", "
218 "target \"%s\", is too long; it should "
219 "be at most 16 characters long",
221 auth->a_auth_group->ag_target->t_name);
224 if (auth->a_auth_group->ag_name != NULL)
225 log_warnx("mutual secret for user \"%s\", "
226 "auth-group \"%s\", is too short; it "
227 "should be at least 12 characters long",
228 auth->a_user, auth->a_auth_group->ag_name);
230 log_warnx("mutual secret for user \"%s\", "
231 "target \"%s\", is too short; it should be "
232 "at least 12 characters long",
234 auth->a_auth_group->ag_target->t_name);
240 auth_new_chap(struct auth_group *ag, const char *user,
245 if (ag->ag_type == AG_TYPE_UNKNOWN)
246 ag->ag_type = AG_TYPE_CHAP;
247 if (ag->ag_type != AG_TYPE_CHAP) {
248 if (ag->ag_name != NULL)
249 log_warnx("cannot mix \"chap\" authentication with "
250 "other types for auth-group \"%s\"", ag->ag_name);
252 log_warnx("cannot mix \"chap\" authentication with "
253 "other types for target \"%s\"",
254 ag->ag_target->t_name);
259 auth->a_user = checked_strdup(user);
260 auth->a_secret = checked_strdup(secret);
262 auth_check_secret_length(auth);
268 auth_new_chap_mutual(struct auth_group *ag, const char *user,
269 const char *secret, const char *user2, const char *secret2)
273 if (ag->ag_type == AG_TYPE_UNKNOWN)
274 ag->ag_type = AG_TYPE_CHAP_MUTUAL;
275 if (ag->ag_type != AG_TYPE_CHAP_MUTUAL) {
276 if (ag->ag_name != NULL)
277 log_warnx("cannot mix \"chap-mutual\" authentication "
278 "with other types for auth-group \"%s\"",
281 log_warnx("cannot mix \"chap-mutual\" authentication "
282 "with other types for target \"%s\"",
283 ag->ag_target->t_name);
288 auth->a_user = checked_strdup(user);
289 auth->a_secret = checked_strdup(secret);
290 auth->a_mutual_user = checked_strdup(user2);
291 auth->a_mutual_secret = checked_strdup(secret2);
293 auth_check_secret_length(auth);
298 const struct auth_name *
299 auth_name_new(struct auth_group *ag, const char *name)
301 struct auth_name *an;
303 an = calloc(1, sizeof(*an));
305 log_err(1, "calloc");
306 an->an_auth_group = ag;
307 an->an_initator_name = checked_strdup(name);
308 TAILQ_INSERT_TAIL(&ag->ag_names, an, an_next);
313 auth_name_delete(struct auth_name *an)
315 TAILQ_REMOVE(&an->an_auth_group->ag_names, an, an_next);
317 free(an->an_initator_name);
322 auth_name_defined(const struct auth_group *ag)
324 if (TAILQ_EMPTY(&ag->ag_names))
329 const struct auth_name *
330 auth_name_find(const struct auth_group *ag, const char *name)
332 const struct auth_name *auth_name;
334 TAILQ_FOREACH(auth_name, &ag->ag_names, an_next) {
335 if (strcmp(auth_name->an_initator_name, name) == 0)
343 auth_name_check(const struct auth_group *ag, const char *initiator_name)
345 if (!auth_name_defined(ag))
348 if (auth_name_find(ag, initiator_name) == NULL)
354 const struct auth_portal *
355 auth_portal_new(struct auth_group *ag, const char *portal)
357 struct auth_portal *ap;
358 char *net, *mask, *str, *tmp;
361 ap = calloc(1, sizeof(*ap));
363 log_err(1, "calloc");
364 ap->ap_auth_group = ag;
365 ap->ap_initator_portal = checked_strdup(portal);
366 mask = str = checked_strdup(portal);
367 net = strsep(&mask, "/");
373 if (net[len - 1] == ']')
375 if (strchr(net, ':') != NULL) {
376 struct sockaddr_in6 *sin6 =
377 (struct sockaddr_in6 *)&ap->ap_sa;
379 sin6->sin6_len = sizeof(*sin6);
380 sin6->sin6_family = AF_INET6;
381 if (inet_pton(AF_INET6, net, &sin6->sin6_addr) <= 0)
385 struct sockaddr_in *sin =
386 (struct sockaddr_in *)&ap->ap_sa;
388 sin->sin_len = sizeof(*sin);
389 sin->sin_family = AF_INET;
390 if (inet_pton(AF_INET, net, &sin->sin_addr) <= 0)
395 m = strtol(mask, &tmp, 0);
396 if (m < 0 || m > dm || tmp[0] != 0)
402 TAILQ_INSERT_TAIL(&ag->ag_portals, ap, ap_next);
408 log_warnx("incorrect initiator portal \"%s\"", portal);
413 auth_portal_delete(struct auth_portal *ap)
415 TAILQ_REMOVE(&ap->ap_auth_group->ag_portals, ap, ap_next);
417 free(ap->ap_initator_portal);
422 auth_portal_defined(const struct auth_group *ag)
424 if (TAILQ_EMPTY(&ag->ag_portals))
429 const struct auth_portal *
430 auth_portal_find(const struct auth_group *ag, const struct sockaddr_storage *ss)
432 const struct auth_portal *ap;
433 const uint8_t *a, *b;
437 TAILQ_FOREACH(ap, &ag->ag_portals, ap_next) {
438 if (ap->ap_sa.ss_family != ss->ss_family)
440 if (ss->ss_family == AF_INET) {
441 a = (const uint8_t *)
442 &((const struct sockaddr_in *)ss)->sin_addr;
443 b = (const uint8_t *)
444 &((const struct sockaddr_in *)&ap->ap_sa)->sin_addr;
446 a = (const uint8_t *)
447 &((const struct sockaddr_in6 *)ss)->sin6_addr;
448 b = (const uint8_t *)
449 &((const struct sockaddr_in6 *)&ap->ap_sa)->sin6_addr;
451 for (i = 0; i < ap->ap_mask / 8; i++) {
455 if (ap->ap_mask % 8) {
456 bmask = 0xff << (8 - (ap->ap_mask % 8));
457 if ((a[i] & bmask) != (b[i] & bmask))
469 auth_portal_check(const struct auth_group *ag, const struct sockaddr_storage *sa)
472 if (!auth_portal_defined(ag))
475 if (auth_portal_find(ag, sa) == NULL)
482 auth_group_new(struct conf *conf, const char *name)
484 struct auth_group *ag;
487 ag = auth_group_find(conf, name);
489 log_warnx("duplicated auth-group \"%s\"", name);
494 ag = calloc(1, sizeof(*ag));
496 log_err(1, "calloc");
498 ag->ag_name = checked_strdup(name);
499 TAILQ_INIT(&ag->ag_auths);
500 TAILQ_INIT(&ag->ag_names);
501 TAILQ_INIT(&ag->ag_portals);
503 TAILQ_INSERT_TAIL(&conf->conf_auth_groups, ag, ag_next);
509 auth_group_delete(struct auth_group *ag)
511 struct auth *auth, *auth_tmp;
512 struct auth_name *auth_name, *auth_name_tmp;
513 struct auth_portal *auth_portal, *auth_portal_tmp;
515 TAILQ_REMOVE(&ag->ag_conf->conf_auth_groups, ag, ag_next);
517 TAILQ_FOREACH_SAFE(auth, &ag->ag_auths, a_next, auth_tmp)
519 TAILQ_FOREACH_SAFE(auth_name, &ag->ag_names, an_next, auth_name_tmp)
520 auth_name_delete(auth_name);
521 TAILQ_FOREACH_SAFE(auth_portal, &ag->ag_portals, ap_next,
523 auth_portal_delete(auth_portal);
529 auth_group_find(const struct conf *conf, const char *name)
531 struct auth_group *ag;
533 TAILQ_FOREACH(ag, &conf->conf_auth_groups, ag_next) {
534 if (ag->ag_name != NULL && strcmp(ag->ag_name, name) == 0)
542 auth_group_set_type(struct auth_group *ag, const char *str)
546 if (strcmp(str, "none") == 0) {
547 type = AG_TYPE_NO_AUTHENTICATION;
548 } else if (strcmp(str, "deny") == 0) {
550 } else if (strcmp(str, "chap") == 0) {
552 } else if (strcmp(str, "chap-mutual") == 0) {
553 type = AG_TYPE_CHAP_MUTUAL;
555 if (ag->ag_name != NULL)
556 log_warnx("invalid auth-type \"%s\" for auth-group "
557 "\"%s\"", str, ag->ag_name);
559 log_warnx("invalid auth-type \"%s\" for target "
560 "\"%s\"", str, ag->ag_target->t_name);
564 if (ag->ag_type != AG_TYPE_UNKNOWN && ag->ag_type != type) {
565 if (ag->ag_name != NULL) {
566 log_warnx("cannot set auth-type to \"%s\" for "
567 "auth-group \"%s\"; already has a different "
568 "type", str, ag->ag_name);
570 log_warnx("cannot set auth-type to \"%s\" for target "
571 "\"%s\"; already has a different type",
572 str, ag->ag_target->t_name);
582 static struct portal *
583 portal_new(struct portal_group *pg)
585 struct portal *portal;
587 portal = calloc(1, sizeof(*portal));
589 log_err(1, "calloc");
590 TAILQ_INIT(&portal->p_targets);
591 portal->p_portal_group = pg;
592 TAILQ_INSERT_TAIL(&pg->pg_portals, portal, p_next);
597 portal_delete(struct portal *portal)
600 TAILQ_REMOVE(&portal->p_portal_group->pg_portals, portal, p_next);
601 if (portal->p_ai != NULL)
602 freeaddrinfo(portal->p_ai);
603 free(portal->p_listen);
607 struct portal_group *
608 portal_group_new(struct conf *conf, const char *name)
610 struct portal_group *pg;
612 pg = portal_group_find(conf, name);
614 log_warnx("duplicated portal-group \"%s\"", name);
618 pg = calloc(1, sizeof(*pg));
620 log_err(1, "calloc");
621 pg->pg_name = checked_strdup(name);
622 TAILQ_INIT(&pg->pg_options);
623 TAILQ_INIT(&pg->pg_portals);
624 TAILQ_INIT(&pg->pg_ports);
626 pg->pg_tag = 0; /* Assigned later in conf_apply(). */
629 TAILQ_INSERT_TAIL(&conf->conf_portal_groups, pg, pg_next);
635 portal_group_delete(struct portal_group *pg)
637 struct portal *portal, *tmp;
638 struct port *port, *tport;
639 struct option *o, *otmp;
641 TAILQ_FOREACH_SAFE(port, &pg->pg_ports, p_pgs, tport)
643 TAILQ_REMOVE(&pg->pg_conf->conf_portal_groups, pg, pg_next);
645 TAILQ_FOREACH_SAFE(portal, &pg->pg_portals, p_next, tmp)
646 portal_delete(portal);
647 TAILQ_FOREACH_SAFE(o, &pg->pg_options, o_next, otmp)
648 option_delete(&pg->pg_options, o);
650 free(pg->pg_offload);
651 free(pg->pg_redirection);
655 struct portal_group *
656 portal_group_find(const struct conf *conf, const char *name)
658 struct portal_group *pg;
660 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
661 if (strcmp(pg->pg_name, name) == 0)
669 parse_addr_port(char *arg, const char *def_port, struct addrinfo **ai)
671 struct addrinfo hints;
672 char *str, *addr, *ch;
674 int error, colons = 0;
676 str = arg = strdup(arg);
679 * IPv6 address in square brackets, perhaps with port.
682 addr = strsep(&arg, "]");
687 if (arg[0] == '\0') {
689 } else if (arg[0] == ':') {
697 * Either IPv6 address without brackets - and without
698 * a port - or IPv4 address. Just count the colons.
700 for (ch = arg; *ch != '\0'; ch++) {
708 addr = strsep(&arg, ":");
716 memset(&hints, 0, sizeof(hints));
717 hints.ai_family = PF_UNSPEC;
718 hints.ai_socktype = SOCK_STREAM;
719 hints.ai_flags = AI_PASSIVE;
720 error = getaddrinfo(addr, port, &hints, ai);
722 return ((error != 0) ? 1 : 0);
726 portal_group_add_listen(struct portal_group *pg, const char *value, bool iser)
728 struct portal *portal;
730 portal = portal_new(pg);
731 portal->p_listen = checked_strdup(value);
732 portal->p_iser = iser;
734 if (parse_addr_port(portal->p_listen, "3260", &portal->p_ai)) {
735 log_warnx("invalid listen address %s", portal->p_listen);
736 portal_delete(portal);
741 * XXX: getaddrinfo(3) may return multiple addresses; we should turn
742 * those into multiple portals.
749 isns_new(struct conf *conf, const char *addr)
753 isns = calloc(1, sizeof(*isns));
755 log_err(1, "calloc");
757 TAILQ_INSERT_TAIL(&conf->conf_isns, isns, i_next);
758 isns->i_addr = checked_strdup(addr);
760 if (parse_addr_port(isns->i_addr, "3205", &isns->i_ai)) {
761 log_warnx("invalid iSNS address %s", isns->i_addr);
767 * XXX: getaddrinfo(3) may return multiple addresses; we should turn
768 * those into multiple servers.
775 isns_delete(struct isns *isns)
778 TAILQ_REMOVE(&isns->i_conf->conf_isns, isns, i_next);
780 if (isns->i_ai != NULL)
781 freeaddrinfo(isns->i_ai);
786 isns_do_connect(struct isns *isns)
790 s = socket(isns->i_ai->ai_family, isns->i_ai->ai_socktype,
791 isns->i_ai->ai_protocol);
793 log_warn("socket(2) failed for %s", isns->i_addr);
796 if (connect(s, isns->i_ai->ai_addr, isns->i_ai->ai_addrlen)) {
797 log_warn("connect(2) failed for %s", isns->i_addr);
805 isns_do_register(struct isns *isns, int s, const char *hostname)
807 struct conf *conf = isns->i_conf;
808 struct target *target;
809 struct portal *portal;
810 struct portal_group *pg;
812 struct isns_req *req;
816 req = isns_req_create(ISNS_FUNC_DEVATTRREG, ISNS_FLAG_CLIENT);
817 isns_req_add_str(req, 32, TAILQ_FIRST(&conf->conf_targets)->t_name);
818 isns_req_add_delim(req);
819 isns_req_add_str(req, 1, hostname);
820 isns_req_add_32(req, 2, 2); /* 2 -- iSCSI */
821 isns_req_add_32(req, 6, conf->conf_isns_period);
822 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
823 if (pg->pg_unassigned)
825 TAILQ_FOREACH(portal, &pg->pg_portals, p_next) {
826 isns_req_add_addr(req, 16, portal->p_ai);
827 isns_req_add_port(req, 17, portal->p_ai);
830 TAILQ_FOREACH(target, &conf->conf_targets, t_next) {
831 isns_req_add_str(req, 32, target->t_name);
832 isns_req_add_32(req, 33, 1); /* 1 -- Target*/
833 if (target->t_alias != NULL)
834 isns_req_add_str(req, 34, target->t_alias);
835 TAILQ_FOREACH(port, &target->t_ports, p_ts) {
836 if ((pg = port->p_portal_group) == NULL)
838 isns_req_add_32(req, 51, pg->pg_tag);
839 TAILQ_FOREACH(portal, &pg->pg_portals, p_next) {
840 isns_req_add_addr(req, 49, portal->p_ai);
841 isns_req_add_port(req, 50, portal->p_ai);
845 res = isns_req_send(s, req);
847 log_warn("send(2) failed for %s", isns->i_addr);
850 res = isns_req_receive(s, req);
852 log_warn("receive(2) failed for %s", isns->i_addr);
855 error = isns_req_get_status(req);
857 log_warnx("iSNS register error %d for %s", error, isns->i_addr);
866 isns_do_check(struct isns *isns, int s, const char *hostname)
868 struct conf *conf = isns->i_conf;
869 struct isns_req *req;
873 req = isns_req_create(ISNS_FUNC_DEVATTRQRY, ISNS_FLAG_CLIENT);
874 isns_req_add_str(req, 32, TAILQ_FIRST(&conf->conf_targets)->t_name);
875 isns_req_add_str(req, 1, hostname);
876 isns_req_add_delim(req);
877 isns_req_add(req, 2, 0, NULL);
878 res = isns_req_send(s, req);
880 log_warn("send(2) failed for %s", isns->i_addr);
883 res = isns_req_receive(s, req);
885 log_warn("receive(2) failed for %s", isns->i_addr);
888 error = isns_req_get_status(req);
890 log_warnx("iSNS check error %d for %s", error, isns->i_addr);
899 isns_do_deregister(struct isns *isns, int s, const char *hostname)
901 struct conf *conf = isns->i_conf;
902 struct isns_req *req;
906 req = isns_req_create(ISNS_FUNC_DEVDEREG, ISNS_FLAG_CLIENT);
907 isns_req_add_str(req, 32, TAILQ_FIRST(&conf->conf_targets)->t_name);
908 isns_req_add_delim(req);
909 isns_req_add_str(req, 1, hostname);
910 res = isns_req_send(s, req);
912 log_warn("send(2) failed for %s", isns->i_addr);
915 res = isns_req_receive(s, req);
917 log_warn("receive(2) failed for %s", isns->i_addr);
920 error = isns_req_get_status(req);
922 log_warnx("iSNS deregister error %d for %s", error, isns->i_addr);
931 isns_register(struct isns *isns, struct isns *oldisns)
933 struct conf *conf = isns->i_conf;
937 if (TAILQ_EMPTY(&conf->conf_targets) ||
938 TAILQ_EMPTY(&conf->conf_portal_groups))
940 set_timeout(conf->conf_isns_timeout, false);
941 s = isns_do_connect(isns);
943 set_timeout(0, false);
946 error = gethostname(hostname, sizeof(hostname));
948 log_err(1, "gethostname");
950 if (oldisns == NULL || TAILQ_EMPTY(&oldisns->i_conf->conf_targets))
952 isns_do_deregister(oldisns, s, hostname);
953 isns_do_register(isns, s, hostname);
955 set_timeout(0, false);
959 isns_check(struct isns *isns)
961 struct conf *conf = isns->i_conf;
965 if (TAILQ_EMPTY(&conf->conf_targets) ||
966 TAILQ_EMPTY(&conf->conf_portal_groups))
968 set_timeout(conf->conf_isns_timeout, false);
969 s = isns_do_connect(isns);
971 set_timeout(0, false);
974 error = gethostname(hostname, sizeof(hostname));
976 log_err(1, "gethostname");
978 res = isns_do_check(isns, s, hostname);
980 isns_do_deregister(isns, s, hostname);
981 isns_do_register(isns, s, hostname);
984 set_timeout(0, false);
988 isns_deregister(struct isns *isns)
990 struct conf *conf = isns->i_conf;
994 if (TAILQ_EMPTY(&conf->conf_targets) ||
995 TAILQ_EMPTY(&conf->conf_portal_groups))
997 set_timeout(conf->conf_isns_timeout, false);
998 s = isns_do_connect(isns);
1001 error = gethostname(hostname, sizeof(hostname));
1003 log_err(1, "gethostname");
1005 isns_do_deregister(isns, s, hostname);
1007 set_timeout(0, false);
1011 portal_group_set_filter(struct portal_group *pg, const char *str)
1015 if (strcmp(str, "none") == 0) {
1016 filter = PG_FILTER_NONE;
1017 } else if (strcmp(str, "portal") == 0) {
1018 filter = PG_FILTER_PORTAL;
1019 } else if (strcmp(str, "portal-name") == 0) {
1020 filter = PG_FILTER_PORTAL_NAME;
1021 } else if (strcmp(str, "portal-name-auth") == 0) {
1022 filter = PG_FILTER_PORTAL_NAME_AUTH;
1024 log_warnx("invalid discovery-filter \"%s\" for portal-group "
1025 "\"%s\"; valid values are \"none\", \"portal\", "
1026 "\"portal-name\", and \"portal-name-auth\"",
1031 if (pg->pg_discovery_filter != PG_FILTER_UNKNOWN &&
1032 pg->pg_discovery_filter != filter) {
1033 log_warnx("cannot set discovery-filter to \"%s\" for "
1034 "portal-group \"%s\"; already has a different "
1035 "value", str, pg->pg_name);
1039 pg->pg_discovery_filter = filter;
1045 portal_group_set_offload(struct portal_group *pg, const char *offload)
1048 if (pg->pg_offload != NULL) {
1049 log_warnx("cannot set offload to \"%s\" for "
1050 "portal-group \"%s\"; already defined",
1051 offload, pg->pg_name);
1055 pg->pg_offload = checked_strdup(offload);
1061 portal_group_set_redirection(struct portal_group *pg, const char *addr)
1064 if (pg->pg_redirection != NULL) {
1065 log_warnx("cannot set redirection to \"%s\" for "
1066 "portal-group \"%s\"; already defined",
1071 pg->pg_redirection = checked_strdup(addr);
1077 valid_hex(const char ch)
1109 valid_iscsi_name(const char *name)
1113 if (strlen(name) >= MAX_NAME_LEN) {
1114 log_warnx("overlong name for target \"%s\"; max length allowed "
1115 "by iSCSI specification is %d characters",
1116 name, MAX_NAME_LEN);
1121 * In the cases below, we don't return an error, just in case the admin
1122 * was right, and we're wrong.
1124 if (strncasecmp(name, "iqn.", strlen("iqn.")) == 0) {
1125 for (i = strlen("iqn."); name[i] != '\0'; i++) {
1127 * XXX: We should verify UTF-8 normalisation, as defined
1128 * by 3.2.6.2: iSCSI Name Encoding.
1130 if (isalnum(name[i]))
1132 if (name[i] == '-' || name[i] == '.' || name[i] == ':')
1134 log_warnx("invalid character \"%c\" in target name "
1135 "\"%s\"; allowed characters are letters, digits, "
1136 "'-', '.', and ':'", name[i], name);
1140 * XXX: Check more stuff: valid date and a valid reversed domain.
1142 } else if (strncasecmp(name, "eui.", strlen("eui.")) == 0) {
1143 if (strlen(name) != strlen("eui.") + 16)
1144 log_warnx("invalid target name \"%s\"; the \"eui.\" "
1145 "should be followed by exactly 16 hexadecimal "
1147 for (i = strlen("eui."); name[i] != '\0'; i++) {
1148 if (!valid_hex(name[i])) {
1149 log_warnx("invalid character \"%c\" in target "
1150 "name \"%s\"; allowed characters are 1-9 "
1151 "and A-F", name[i], name);
1155 } else if (strncasecmp(name, "naa.", strlen("naa.")) == 0) {
1156 if (strlen(name) > strlen("naa.") + 32)
1157 log_warnx("invalid target name \"%s\"; the \"naa.\" "
1158 "should be followed by at most 32 hexadecimal "
1160 for (i = strlen("naa."); name[i] != '\0'; i++) {
1161 if (!valid_hex(name[i])) {
1162 log_warnx("invalid character \"%c\" in target "
1163 "name \"%s\"; allowed characters are 1-9 "
1164 "and A-F", name[i], name);
1169 log_warnx("invalid target name \"%s\"; should start with "
1170 "either \"iqn.\", \"eui.\", or \"naa.\"",
1177 pport_new(struct conf *conf, const char *name, uint32_t ctl_port)
1181 pp = calloc(1, sizeof(*pp));
1183 log_err(1, "calloc");
1185 pp->pp_name = checked_strdup(name);
1186 pp->pp_ctl_port = ctl_port;
1187 TAILQ_INIT(&pp->pp_ports);
1188 TAILQ_INSERT_TAIL(&conf->conf_pports, pp, pp_next);
1193 pport_find(const struct conf *conf, const char *name)
1197 TAILQ_FOREACH(pp, &conf->conf_pports, pp_next) {
1198 if (strcasecmp(pp->pp_name, name) == 0)
1205 pport_copy(struct pport *pp, struct conf *conf)
1207 struct pport *ppnew;
1209 ppnew = pport_new(conf, pp->pp_name, pp->pp_ctl_port);
1214 pport_delete(struct pport *pp)
1216 struct port *port, *tport;
1218 TAILQ_FOREACH_SAFE(port, &pp->pp_ports, p_ts, tport)
1220 TAILQ_REMOVE(&pp->pp_conf->conf_pports, pp, pp_next);
1226 port_new(struct conf *conf, struct target *target, struct portal_group *pg)
1232 ret = asprintf(&name, "%s-%s", pg->pg_name, target->t_name);
1234 log_err(1, "asprintf");
1235 if (port_find(conf, name) != NULL) {
1236 log_warnx("duplicate port \"%s\"", name);
1240 port = calloc(1, sizeof(*port));
1242 log_err(1, "calloc");
1243 port->p_conf = conf;
1244 port->p_name = name;
1245 port->p_ioctl_port = 0;
1246 TAILQ_INSERT_TAIL(&conf->conf_ports, port, p_next);
1247 TAILQ_INSERT_TAIL(&target->t_ports, port, p_ts);
1248 port->p_target = target;
1249 TAILQ_INSERT_TAIL(&pg->pg_ports, port, p_pgs);
1250 port->p_portal_group = pg;
1255 port_new_ioctl(struct conf *conf, struct target *target, int pp, int vp)
1257 struct pport *pport;
1263 ret = asprintf(&pname, "ioctl/%d/%d", pp, vp);
1265 log_err(1, "asprintf");
1269 pport = pport_find(conf, pname);
1270 if (pport != NULL) {
1272 return (port_new_pp(conf, target, pport));
1275 ret = asprintf(&name, "%s-%s", pname, target->t_name);
1279 log_err(1, "asprintf");
1280 if (port_find(conf, name) != NULL) {
1281 log_warnx("duplicate port \"%s\"", name);
1285 port = calloc(1, sizeof(*port));
1287 log_err(1, "calloc");
1288 port->p_conf = conf;
1289 port->p_name = name;
1290 port->p_ioctl_port = 1;
1291 port->p_ioctl_pp = pp;
1292 port->p_ioctl_vp = vp;
1293 TAILQ_INSERT_TAIL(&conf->conf_ports, port, p_next);
1294 TAILQ_INSERT_TAIL(&target->t_ports, port, p_ts);
1295 port->p_target = target;
1300 port_new_pp(struct conf *conf, struct target *target, struct pport *pp)
1306 ret = asprintf(&name, "%s-%s", pp->pp_name, target->t_name);
1308 log_err(1, "asprintf");
1309 if (port_find(conf, name) != NULL) {
1310 log_warnx("duplicate port \"%s\"", name);
1314 port = calloc(1, sizeof(*port));
1316 log_err(1, "calloc");
1317 port->p_conf = conf;
1318 port->p_name = name;
1319 TAILQ_INSERT_TAIL(&conf->conf_ports, port, p_next);
1320 TAILQ_INSERT_TAIL(&target->t_ports, port, p_ts);
1321 port->p_target = target;
1322 TAILQ_INSERT_TAIL(&pp->pp_ports, port, p_pps);
1328 port_find(const struct conf *conf, const char *name)
1332 TAILQ_FOREACH(port, &conf->conf_ports, p_next) {
1333 if (strcasecmp(port->p_name, name) == 0)
1341 port_find_in_pg(const struct portal_group *pg, const char *target)
1345 TAILQ_FOREACH(port, &pg->pg_ports, p_pgs) {
1346 if (strcasecmp(port->p_target->t_name, target) == 0)
1354 port_delete(struct port *port)
1357 if (port->p_portal_group)
1358 TAILQ_REMOVE(&port->p_portal_group->pg_ports, port, p_pgs);
1360 TAILQ_REMOVE(&port->p_pport->pp_ports, port, p_pps);
1362 TAILQ_REMOVE(&port->p_target->t_ports, port, p_ts);
1363 TAILQ_REMOVE(&port->p_conf->conf_ports, port, p_next);
1369 port_is_dummy(struct port *port)
1372 if (port->p_portal_group) {
1373 if (port->p_portal_group->pg_foreign)
1375 if (TAILQ_EMPTY(&port->p_portal_group->pg_portals))
1382 target_new(struct conf *conf, const char *name)
1384 struct target *targ;
1387 targ = target_find(conf, name);
1389 log_warnx("duplicated target \"%s\"", name);
1392 if (valid_iscsi_name(name) == false) {
1393 log_warnx("target name \"%s\" is invalid", name);
1396 targ = calloc(1, sizeof(*targ));
1398 log_err(1, "calloc");
1399 targ->t_name = checked_strdup(name);
1402 * RFC 3722 requires us to normalize the name to lowercase.
1405 for (i = 0; i < len; i++)
1406 targ->t_name[i] = tolower(targ->t_name[i]);
1408 targ->t_conf = conf;
1409 TAILQ_INIT(&targ->t_ports);
1410 TAILQ_INSERT_TAIL(&conf->conf_targets, targ, t_next);
1416 target_delete(struct target *targ)
1418 struct port *port, *tport;
1420 TAILQ_FOREACH_SAFE(port, &targ->t_ports, p_ts, tport)
1422 TAILQ_REMOVE(&targ->t_conf->conf_targets, targ, t_next);
1425 free(targ->t_redirection);
1430 target_find(struct conf *conf, const char *name)
1432 struct target *targ;
1434 TAILQ_FOREACH(targ, &conf->conf_targets, t_next) {
1435 if (strcasecmp(targ->t_name, name) == 0)
1443 target_set_redirection(struct target *target, const char *addr)
1446 if (target->t_redirection != NULL) {
1447 log_warnx("cannot set redirection to \"%s\" for "
1448 "target \"%s\"; already defined",
1449 addr, target->t_name);
1453 target->t_redirection = checked_strdup(addr);
1459 lun_new(struct conf *conf, const char *name)
1463 lun = lun_find(conf, name);
1465 log_warnx("duplicated lun \"%s\"", name);
1469 lun = calloc(1, sizeof(*lun));
1471 log_err(1, "calloc");
1473 lun->l_name = checked_strdup(name);
1474 TAILQ_INIT(&lun->l_options);
1475 TAILQ_INSERT_TAIL(&conf->conf_luns, lun, l_next);
1476 lun->l_ctl_lun = -1;
1482 lun_delete(struct lun *lun)
1484 struct target *targ;
1485 struct option *o, *tmp;
1488 TAILQ_FOREACH(targ, &lun->l_conf->conf_targets, t_next) {
1489 for (i = 0; i < MAX_LUNS; i++) {
1490 if (targ->t_luns[i] == lun)
1491 targ->t_luns[i] = NULL;
1494 TAILQ_REMOVE(&lun->l_conf->conf_luns, lun, l_next);
1496 TAILQ_FOREACH_SAFE(o, &lun->l_options, o_next, tmp)
1497 option_delete(&lun->l_options, o);
1499 free(lun->l_backend);
1500 free(lun->l_device_id);
1502 free(lun->l_scsiname);
1503 free(lun->l_serial);
1508 lun_find(const struct conf *conf, const char *name)
1512 TAILQ_FOREACH(lun, &conf->conf_luns, l_next) {
1513 if (strcmp(lun->l_name, name) == 0)
1521 lun_set_backend(struct lun *lun, const char *value)
1523 free(lun->l_backend);
1524 lun->l_backend = checked_strdup(value);
1528 lun_set_blocksize(struct lun *lun, size_t value)
1531 lun->l_blocksize = value;
1535 lun_set_device_type(struct lun *lun, uint8_t value)
1538 lun->l_device_type = value;
1542 lun_set_device_id(struct lun *lun, const char *value)
1544 free(lun->l_device_id);
1545 lun->l_device_id = checked_strdup(value);
1549 lun_set_path(struct lun *lun, const char *value)
1552 lun->l_path = checked_strdup(value);
1556 lun_set_scsiname(struct lun *lun, const char *value)
1558 free(lun->l_scsiname);
1559 lun->l_scsiname = checked_strdup(value);
1563 lun_set_serial(struct lun *lun, const char *value)
1565 free(lun->l_serial);
1566 lun->l_serial = checked_strdup(value);
1570 lun_set_size(struct lun *lun, size_t value)
1573 lun->l_size = value;
1577 lun_set_ctl_lun(struct lun *lun, uint32_t value)
1580 lun->l_ctl_lun = value;
1584 option_new(struct options *options, const char *name, const char *value)
1588 o = option_find(options, name);
1590 log_warnx("duplicated option \"%s\"", name);
1594 o = calloc(1, sizeof(*o));
1596 log_err(1, "calloc");
1597 o->o_name = checked_strdup(name);
1598 o->o_value = checked_strdup(value);
1599 TAILQ_INSERT_TAIL(options, o, o_next);
1605 option_delete(struct options *options, struct option *o)
1608 TAILQ_REMOVE(options, o, o_next);
1615 option_find(const struct options *options, const char *name)
1619 TAILQ_FOREACH(o, options, o_next) {
1620 if (strcmp(o->o_name, name) == 0)
1628 option_set(struct option *o, const char *value)
1632 o->o_value = checked_strdup(value);
1635 static struct connection *
1636 connection_new(struct portal *portal, int fd, const char *host,
1637 const struct sockaddr *client_sa)
1639 struct connection *conn;
1641 conn = calloc(1, sizeof(*conn));
1643 log_err(1, "calloc");
1644 conn->conn_portal = portal;
1645 conn->conn_socket = fd;
1646 conn->conn_initiator_addr = checked_strdup(host);
1647 memcpy(&conn->conn_initiator_sa, client_sa, client_sa->sa_len);
1650 * Default values, from RFC 3720, section 12.
1652 conn->conn_max_recv_data_segment_length = 8192;
1653 conn->conn_max_send_data_segment_length = 8192;
1654 conn->conn_max_burst_length = 262144;
1655 conn->conn_first_burst_length = 65536;
1656 conn->conn_immediate_data = true;
1663 conf_print(struct conf *conf)
1665 struct auth_group *ag;
1667 struct auth_name *auth_name;
1668 struct auth_portal *auth_portal;
1669 struct portal_group *pg;
1670 struct portal *portal;
1671 struct target *targ;
1675 TAILQ_FOREACH(ag, &conf->conf_auth_groups, ag_next) {
1676 fprintf(stderr, "auth-group %s {\n", ag->ag_name);
1677 TAILQ_FOREACH(auth, &ag->ag_auths, a_next)
1678 fprintf(stderr, "\t chap-mutual %s %s %s %s\n",
1679 auth->a_user, auth->a_secret,
1680 auth->a_mutual_user, auth->a_mutual_secret);
1681 TAILQ_FOREACH(auth_name, &ag->ag_names, an_next)
1682 fprintf(stderr, "\t initiator-name %s\n",
1683 auth_name->an_initator_name);
1684 TAILQ_FOREACH(auth_portal, &ag->ag_portals, ap_next)
1685 fprintf(stderr, "\t initiator-portal %s\n",
1686 auth_portal->ap_initator_portal);
1687 fprintf(stderr, "}\n");
1689 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
1690 fprintf(stderr, "portal-group %s {\n", pg->pg_name);
1691 TAILQ_FOREACH(portal, &pg->pg_portals, p_next)
1692 fprintf(stderr, "\t listen %s\n", portal->p_listen);
1693 fprintf(stderr, "}\n");
1695 TAILQ_FOREACH(lun, &conf->conf_luns, l_next) {
1696 fprintf(stderr, "\tlun %s {\n", lun->l_name);
1697 fprintf(stderr, "\t\tpath %s\n", lun->l_path);
1698 TAILQ_FOREACH(o, &lun->l_options, o_next)
1699 fprintf(stderr, "\t\toption %s %s\n",
1700 o->o_name, o->o_value);
1701 fprintf(stderr, "\t}\n");
1703 TAILQ_FOREACH(targ, &conf->conf_targets, t_next) {
1704 fprintf(stderr, "target %s {\n", targ->t_name);
1705 if (targ->t_alias != NULL)
1706 fprintf(stderr, "\t alias %s\n", targ->t_alias);
1707 fprintf(stderr, "}\n");
1713 conf_verify_lun(struct lun *lun)
1715 const struct lun *lun2;
1717 if (lun->l_backend == NULL)
1718 lun_set_backend(lun, "block");
1719 if (strcmp(lun->l_backend, "block") == 0) {
1720 if (lun->l_path == NULL) {
1721 log_warnx("missing path for lun \"%s\"",
1725 } else if (strcmp(lun->l_backend, "ramdisk") == 0) {
1726 if (lun->l_size == 0) {
1727 log_warnx("missing size for ramdisk-backed lun \"%s\"",
1731 if (lun->l_path != NULL) {
1732 log_warnx("path must not be specified "
1733 "for ramdisk-backed lun \"%s\"",
1738 if (lun->l_blocksize == 0) {
1739 if (lun->l_device_type == 5)
1740 lun_set_blocksize(lun, DEFAULT_CD_BLOCKSIZE);
1742 lun_set_blocksize(lun, DEFAULT_BLOCKSIZE);
1743 } else if (lun->l_blocksize < 0) {
1744 log_warnx("invalid blocksize for lun \"%s\"; "
1745 "must be larger than 0", lun->l_name);
1748 if (lun->l_size != 0 && lun->l_size % lun->l_blocksize != 0) {
1749 log_warnx("invalid size for lun \"%s\"; "
1750 "must be multiple of blocksize", lun->l_name);
1753 TAILQ_FOREACH(lun2, &lun->l_conf->conf_luns, l_next) {
1756 if (lun->l_path != NULL && lun2->l_path != NULL &&
1757 strcmp(lun->l_path, lun2->l_path) == 0) {
1758 log_debugx("WARNING: path \"%s\" duplicated "
1759 "between lun \"%s\", and "
1760 "lun \"%s\"", lun->l_path,
1761 lun->l_name, lun2->l_name);
1769 conf_verify(struct conf *conf)
1771 struct auth_group *ag;
1772 struct portal_group *pg;
1774 struct target *targ;
1779 if (conf->conf_pidfile_path == NULL)
1780 conf->conf_pidfile_path = checked_strdup(DEFAULT_PIDFILE);
1782 TAILQ_FOREACH(lun, &conf->conf_luns, l_next) {
1783 error = conf_verify_lun(lun);
1787 TAILQ_FOREACH(targ, &conf->conf_targets, t_next) {
1788 if (targ->t_auth_group == NULL) {
1789 targ->t_auth_group = auth_group_find(conf,
1791 assert(targ->t_auth_group != NULL);
1793 if (TAILQ_EMPTY(&targ->t_ports)) {
1794 pg = portal_group_find(conf, "default");
1796 port_new(conf, targ, pg);
1799 for (i = 0; i < MAX_LUNS; i++) {
1800 if (targ->t_luns[i] != NULL)
1803 if (!found && targ->t_redirection == NULL) {
1804 log_warnx("no LUNs defined for target \"%s\"",
1807 if (found && targ->t_redirection != NULL) {
1808 log_debugx("target \"%s\" contains luns, "
1809 " but configured for redirection",
1813 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
1814 assert(pg->pg_name != NULL);
1815 if (pg->pg_discovery_auth_group == NULL) {
1816 pg->pg_discovery_auth_group =
1817 auth_group_find(conf, "default");
1818 assert(pg->pg_discovery_auth_group != NULL);
1821 if (pg->pg_discovery_filter == PG_FILTER_UNKNOWN)
1822 pg->pg_discovery_filter = PG_FILTER_NONE;
1824 if (pg->pg_redirection != NULL) {
1825 if (!TAILQ_EMPTY(&pg->pg_ports)) {
1826 log_debugx("portal-group \"%s\" assigned "
1827 "to target, but configured "
1831 pg->pg_unassigned = false;
1832 } else if (!TAILQ_EMPTY(&pg->pg_ports)) {
1833 pg->pg_unassigned = false;
1835 if (strcmp(pg->pg_name, "default") != 0)
1836 log_warnx("portal-group \"%s\" not assigned "
1837 "to any target", pg->pg_name);
1838 pg->pg_unassigned = true;
1841 TAILQ_FOREACH(ag, &conf->conf_auth_groups, ag_next) {
1842 if (ag->ag_name == NULL)
1843 assert(ag->ag_target != NULL);
1845 assert(ag->ag_target == NULL);
1848 TAILQ_FOREACH(targ, &conf->conf_targets, t_next) {
1849 if (targ->t_auth_group == ag) {
1854 TAILQ_FOREACH(port, &conf->conf_ports, p_next) {
1855 if (port->p_auth_group == ag) {
1860 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
1861 if (pg->pg_discovery_auth_group == ag) {
1866 if (!found && ag->ag_name != NULL &&
1867 strcmp(ag->ag_name, "default") != 0 &&
1868 strcmp(ag->ag_name, "no-authentication") != 0 &&
1869 strcmp(ag->ag_name, "no-access") != 0) {
1870 log_warnx("auth-group \"%s\" not assigned "
1871 "to any target", ag->ag_name);
1879 conf_apply(struct conf *oldconf, struct conf *newconf)
1881 struct lun *oldlun, *newlun, *tmplun;
1882 struct portal_group *oldpg, *newpg;
1883 struct portal *oldp, *newp;
1884 struct port *oldport, *newport, *tmpport;
1885 struct isns *oldns, *newns;
1887 int changed, cumulated_error = 0, error, sockbuf;
1890 if (oldconf->conf_debug != newconf->conf_debug) {
1891 log_debugx("changing debug level to %d", newconf->conf_debug);
1892 log_init(newconf->conf_debug);
1895 if (oldconf->conf_pidfh != NULL) {
1896 assert(oldconf->conf_pidfile_path != NULL);
1897 if (newconf->conf_pidfile_path != NULL &&
1898 strcmp(oldconf->conf_pidfile_path,
1899 newconf->conf_pidfile_path) == 0) {
1900 newconf->conf_pidfh = oldconf->conf_pidfh;
1901 oldconf->conf_pidfh = NULL;
1903 log_debugx("removing pidfile %s",
1904 oldconf->conf_pidfile_path);
1905 pidfile_remove(oldconf->conf_pidfh);
1906 oldconf->conf_pidfh = NULL;
1910 if (newconf->conf_pidfh == NULL && newconf->conf_pidfile_path != NULL) {
1911 log_debugx("opening pidfile %s", newconf->conf_pidfile_path);
1912 newconf->conf_pidfh =
1913 pidfile_open(newconf->conf_pidfile_path, 0600, &otherpid);
1914 if (newconf->conf_pidfh == NULL) {
1915 if (errno == EEXIST)
1916 log_errx(1, "daemon already running, pid: %jd.",
1917 (intmax_t)otherpid);
1918 log_err(1, "cannot open or create pidfile \"%s\"",
1919 newconf->conf_pidfile_path);
1924 * Go through the new portal groups, assigning tags or preserving old.
1926 TAILQ_FOREACH(newpg, &newconf->conf_portal_groups, pg_next) {
1927 if (newpg->pg_tag != 0)
1929 oldpg = portal_group_find(oldconf, newpg->pg_name);
1931 newpg->pg_tag = oldpg->pg_tag;
1933 newpg->pg_tag = ++last_portal_group_tag;
1936 /* Deregister on removed iSNS servers. */
1937 TAILQ_FOREACH(oldns, &oldconf->conf_isns, i_next) {
1938 TAILQ_FOREACH(newns, &newconf->conf_isns, i_next) {
1939 if (strcmp(oldns->i_addr, newns->i_addr) == 0)
1943 isns_deregister(oldns);
1947 * XXX: If target or lun removal fails, we should somehow "move"
1948 * the old lun or target into newconf, so that subsequent
1949 * conf_apply() would try to remove them again. That would
1950 * be somewhat hairy, though, and lun deletion failures don't
1951 * really happen, so leave it as it is for now.
1954 * First, remove any ports present in the old configuration
1955 * and missing in the new one.
1957 TAILQ_FOREACH_SAFE(oldport, &oldconf->conf_ports, p_next, tmpport) {
1958 if (port_is_dummy(oldport))
1960 newport = port_find(newconf, oldport->p_name);
1961 if (newport != NULL && !port_is_dummy(newport))
1963 log_debugx("removing port \"%s\"", oldport->p_name);
1964 error = kernel_port_remove(oldport);
1966 log_warnx("failed to remove port %s",
1969 * XXX: Uncomment after fixing the root cause.
1971 * cumulated_error++;
1977 * Second, remove any LUNs present in the old configuration
1978 * and missing in the new one.
1980 TAILQ_FOREACH_SAFE(oldlun, &oldconf->conf_luns, l_next, tmplun) {
1981 newlun = lun_find(newconf, oldlun->l_name);
1982 if (newlun == NULL) {
1983 log_debugx("lun \"%s\", CTL lun %d "
1984 "not found in new configuration; "
1985 "removing", oldlun->l_name, oldlun->l_ctl_lun);
1986 error = kernel_lun_remove(oldlun);
1988 log_warnx("failed to remove lun \"%s\", "
1990 oldlun->l_name, oldlun->l_ctl_lun);
1997 * Also remove the LUNs changed by more than size.
2000 assert(oldlun->l_backend != NULL);
2001 assert(newlun->l_backend != NULL);
2002 if (strcmp(newlun->l_backend, oldlun->l_backend) != 0) {
2003 log_debugx("backend for lun \"%s\", "
2004 "CTL lun %d changed; removing",
2005 oldlun->l_name, oldlun->l_ctl_lun);
2008 if (oldlun->l_blocksize != newlun->l_blocksize) {
2009 log_debugx("blocksize for lun \"%s\", "
2010 "CTL lun %d changed; removing",
2011 oldlun->l_name, oldlun->l_ctl_lun);
2014 if (newlun->l_device_id != NULL &&
2015 (oldlun->l_device_id == NULL ||
2016 strcmp(oldlun->l_device_id, newlun->l_device_id) !=
2018 log_debugx("device-id for lun \"%s\", "
2019 "CTL lun %d changed; removing",
2020 oldlun->l_name, oldlun->l_ctl_lun);
2023 if (newlun->l_path != NULL &&
2024 (oldlun->l_path == NULL ||
2025 strcmp(oldlun->l_path, newlun->l_path) != 0)) {
2026 log_debugx("path for lun \"%s\", "
2027 "CTL lun %d, changed; removing",
2028 oldlun->l_name, oldlun->l_ctl_lun);
2031 if (newlun->l_serial != NULL &&
2032 (oldlun->l_serial == NULL ||
2033 strcmp(oldlun->l_serial, newlun->l_serial) != 0)) {
2034 log_debugx("serial for lun \"%s\", "
2035 "CTL lun %d changed; removing",
2036 oldlun->l_name, oldlun->l_ctl_lun);
2040 error = kernel_lun_remove(oldlun);
2042 log_warnx("failed to remove lun \"%s\", "
2044 oldlun->l_name, oldlun->l_ctl_lun);
2051 lun_set_ctl_lun(newlun, oldlun->l_ctl_lun);
2054 TAILQ_FOREACH_SAFE(newlun, &newconf->conf_luns, l_next, tmplun) {
2055 oldlun = lun_find(oldconf, newlun->l_name);
2056 if (oldlun != NULL) {
2057 log_debugx("modifying lun \"%s\", CTL lun %d",
2058 newlun->l_name, newlun->l_ctl_lun);
2059 error = kernel_lun_modify(newlun);
2061 log_warnx("failed to "
2062 "modify lun \"%s\", CTL lun %d",
2063 newlun->l_name, newlun->l_ctl_lun);
2068 log_debugx("adding lun \"%s\"", newlun->l_name);
2069 error = kernel_lun_add(newlun);
2071 log_warnx("failed to add lun \"%s\"", newlun->l_name);
2078 * Now add new ports or modify existing ones.
2080 TAILQ_FOREACH(newport, &newconf->conf_ports, p_next) {
2081 if (port_is_dummy(newport))
2083 oldport = port_find(oldconf, newport->p_name);
2085 if (oldport == NULL || port_is_dummy(oldport)) {
2086 log_debugx("adding port \"%s\"", newport->p_name);
2087 error = kernel_port_add(newport);
2089 log_debugx("updating port \"%s\"", newport->p_name);
2090 newport->p_ctl_port = oldport->p_ctl_port;
2091 error = kernel_port_update(newport, oldport);
2094 log_warnx("failed to %s port %s",
2095 (oldport == NULL) ? "add" : "update",
2098 * XXX: Uncomment after fixing the root cause.
2100 * cumulated_error++;
2106 * Go through the new portals, opening the sockets as necessary.
2108 TAILQ_FOREACH(newpg, &newconf->conf_portal_groups, pg_next) {
2109 if (newpg->pg_foreign)
2111 if (newpg->pg_unassigned) {
2112 log_debugx("not listening on portal-group \"%s\", "
2113 "not assigned to any target",
2117 TAILQ_FOREACH(newp, &newpg->pg_portals, p_next) {
2119 * Try to find already open portal and reuse
2120 * the listening socket. We don't care about
2121 * what portal or portal group that was, what
2122 * matters is the listening address.
2124 TAILQ_FOREACH(oldpg, &oldconf->conf_portal_groups,
2126 TAILQ_FOREACH(oldp, &oldpg->pg_portals,
2128 if (strcmp(newp->p_listen,
2129 oldp->p_listen) == 0 &&
2130 oldp->p_socket > 0) {
2138 if (newp->p_socket > 0) {
2140 * We're done with this portal.
2145 #ifdef ICL_KERNEL_PROXY
2147 newpg->pg_conf->conf_portal_id++;
2148 newp->p_id = newpg->pg_conf->conf_portal_id;
2149 log_debugx("listening on %s, portal-group "
2150 "\"%s\", portal id %d, using ICL proxy",
2151 newp->p_listen, newpg->pg_name, newp->p_id);
2152 kernel_listen(newp->p_ai, newp->p_iser,
2157 assert(proxy_mode == false);
2158 assert(newp->p_iser == false);
2160 log_debugx("listening on %s, portal-group \"%s\"",
2161 newp->p_listen, newpg->pg_name);
2162 newp->p_socket = socket(newp->p_ai->ai_family,
2163 newp->p_ai->ai_socktype,
2164 newp->p_ai->ai_protocol);
2165 if (newp->p_socket < 0) {
2166 log_warn("socket(2) failed for %s",
2171 sockbuf = SOCKBUF_SIZE;
2172 if (setsockopt(newp->p_socket, SOL_SOCKET, SO_RCVBUF,
2173 &sockbuf, sizeof(sockbuf)) == -1)
2174 log_warn("setsockopt(SO_RCVBUF) failed "
2175 "for %s", newp->p_listen);
2176 sockbuf = SOCKBUF_SIZE;
2177 if (setsockopt(newp->p_socket, SOL_SOCKET, SO_SNDBUF,
2178 &sockbuf, sizeof(sockbuf)) == -1)
2179 log_warn("setsockopt(SO_SNDBUF) failed "
2180 "for %s", newp->p_listen);
2181 error = setsockopt(newp->p_socket, SOL_SOCKET,
2182 SO_REUSEADDR, &one, sizeof(one));
2184 log_warn("setsockopt(SO_REUSEADDR) failed "
2185 "for %s", newp->p_listen);
2186 close(newp->p_socket);
2191 if (newpg->pg_dscp != -1) {
2193 int len = sizeof(sa);
2194 getsockname(newp->p_socket, &sa, &len);
2196 * Only allow the 6-bit DSCP
2197 * field to be modified
2199 int tos = newpg->pg_dscp << 2;
2200 if (sa.sa_family == AF_INET) {
2201 if (setsockopt(newp->p_socket,
2203 &tos, sizeof(tos)) == -1)
2204 log_warn("setsockopt(IP_TOS) "
2208 if (sa.sa_family == AF_INET6) {
2209 if (setsockopt(newp->p_socket,
2210 IPPROTO_IPV6, IPV6_TCLASS,
2211 &tos, sizeof(tos)) == -1)
2212 log_warn("setsockopt(IPV6_TCLASS) "
2217 if (newpg->pg_pcp != -1) {
2219 int len = sizeof(sa);
2220 getsockname(newp->p_socket, &sa, &len);
2222 * Only allow the 6-bit DSCP
2223 * field to be modified
2225 int pcp = newpg->pg_pcp;
2226 if (sa.sa_family == AF_INET) {
2227 if (setsockopt(newp->p_socket,
2228 IPPROTO_IP, IP_VLAN_PCP,
2229 &pcp, sizeof(pcp)) == -1)
2230 log_warn("setsockopt(IP_VLAN_PCP) "
2234 if (sa.sa_family == AF_INET6) {
2235 if (setsockopt(newp->p_socket,
2236 IPPROTO_IPV6, IPV6_VLAN_PCP,
2237 &pcp, sizeof(pcp)) == -1)
2238 log_warn("setsockopt(IPV6_VLAN_PCP) "
2243 error = bind(newp->p_socket, newp->p_ai->ai_addr,
2244 newp->p_ai->ai_addrlen);
2246 log_warn("bind(2) failed for %s",
2248 close(newp->p_socket);
2253 error = listen(newp->p_socket, -1);
2255 log_warn("listen(2) failed for %s",
2257 close(newp->p_socket);
2266 * Go through the no longer used sockets, closing them.
2268 TAILQ_FOREACH(oldpg, &oldconf->conf_portal_groups, pg_next) {
2269 TAILQ_FOREACH(oldp, &oldpg->pg_portals, p_next) {
2270 if (oldp->p_socket <= 0)
2272 log_debugx("closing socket for %s, portal-group \"%s\"",
2273 oldp->p_listen, oldpg->pg_name);
2274 close(oldp->p_socket);
2279 /* (Re-)Register on remaining/new iSNS servers. */
2280 TAILQ_FOREACH(newns, &newconf->conf_isns, i_next) {
2281 TAILQ_FOREACH(oldns, &oldconf->conf_isns, i_next) {
2282 if (strcmp(oldns->i_addr, newns->i_addr) == 0)
2285 isns_register(newns, oldns);
2288 /* Schedule iSNS update */
2289 if (!TAILQ_EMPTY(&newconf->conf_isns))
2290 set_timeout((newconf->conf_isns_period + 2) / 3, false);
2292 return (cumulated_error);
2299 return (sigalrm_received);
2303 sigalrm_handler_fatal(int dummy __unused)
2306 * It would be easiest to just log an error and exit. We can't
2307 * do this, though, because log_errx() is not signal safe, since
2308 * it calls syslog(3). Instead, set a flag checked by pdu_send()
2309 * and pdu_receive(), to call log_errx() there. Should they fail
2310 * to notice, we'll exit here one second later.
2312 if (sigalrm_received) {
2314 * Oh well. Just give up and quit.
2319 sigalrm_received = true;
2323 sigalrm_handler(int dummy __unused)
2326 sigalrm_received = true;
2330 set_timeout(int timeout, int fatal)
2332 struct sigaction sa;
2333 struct itimerval itv;
2337 log_debugx("session timeout disabled");
2338 bzero(&itv, sizeof(itv));
2339 error = setitimer(ITIMER_REAL, &itv, NULL);
2341 log_err(1, "setitimer");
2342 sigalrm_received = false;
2346 sigalrm_received = false;
2347 bzero(&sa, sizeof(sa));
2349 sa.sa_handler = sigalrm_handler_fatal;
2351 sa.sa_handler = sigalrm_handler;
2352 sigfillset(&sa.sa_mask);
2353 error = sigaction(SIGALRM, &sa, NULL);
2355 log_err(1, "sigaction");
2358 * First SIGALRM will arive after conf_timeout seconds.
2359 * If we do nothing, another one will arrive a second later.
2361 log_debugx("setting session timeout to %d seconds", timeout);
2362 bzero(&itv, sizeof(itv));
2363 itv.it_interval.tv_sec = 1;
2364 itv.it_value.tv_sec = timeout;
2365 error = setitimer(ITIMER_REAL, &itv, NULL);
2367 log_err(1, "setitimer");
2371 wait_for_children(bool block)
2379 * If "block" is true, wait for at least one process.
2381 if (block && num == 0)
2382 pid = wait4(-1, &status, 0, NULL);
2384 pid = wait4(-1, &status, WNOHANG, NULL);
2387 if (WIFSIGNALED(status)) {
2388 log_warnx("child process %d terminated with signal %d",
2389 pid, WTERMSIG(status));
2390 } else if (WEXITSTATUS(status) != 0) {
2391 log_warnx("child process %d terminated with exit status %d",
2392 pid, WEXITSTATUS(status));
2394 log_debugx("child process %d terminated gracefully", pid);
2403 handle_connection(struct portal *portal, int fd,
2404 const struct sockaddr *client_sa, bool dont_fork)
2406 struct connection *conn;
2409 char host[NI_MAXHOST + 1];
2412 conf = portal->p_portal_group->pg_conf;
2415 log_debugx("incoming connection; not forking due to -d flag");
2417 nchildren -= wait_for_children(false);
2418 assert(nchildren >= 0);
2420 while (conf->conf_maxproc > 0 && nchildren >= conf->conf_maxproc) {
2421 log_debugx("maxproc limit of %d child processes hit; "
2422 "waiting for child process to exit", conf->conf_maxproc);
2423 nchildren -= wait_for_children(true);
2424 assert(nchildren >= 0);
2426 log_debugx("incoming connection; forking child process #%d",
2437 pidfile_close(conf->conf_pidfh);
2439 error = getnameinfo(client_sa, client_sa->sa_len,
2440 host, sizeof(host), NULL, 0, NI_NUMERICHOST);
2442 log_errx(1, "getnameinfo: %s", gai_strerror(error));
2444 log_debugx("accepted connection from %s; portal group \"%s\"",
2445 host, portal->p_portal_group->pg_name);
2446 log_set_peer_addr(host);
2447 setproctitle("%s", host);
2449 conn = connection_new(portal, fd, host, client_sa);
2450 set_timeout(conf->conf_timeout, true);
2453 if (conn->conn_session_type == CONN_SESSION_TYPE_NORMAL) {
2454 kernel_handoff(conn);
2455 log_debugx("connection handed off to the kernel");
2457 assert(conn->conn_session_type == CONN_SESSION_TYPE_DISCOVERY);
2460 log_debugx("nothing more to do; exiting");
2465 fd_add(int fd, fd_set *fdset, int nfds)
2469 * Skip sockets which we failed to bind.
2481 main_loop(struct conf *conf, bool dont_fork)
2483 struct portal_group *pg;
2484 struct portal *portal;
2485 struct sockaddr_storage client_sa;
2486 socklen_t client_salen;
2487 #ifdef ICL_KERNEL_PROXY
2492 int error, nfds, client_fd;
2494 pidfile_write(conf->conf_pidfh);
2497 if (sighup_received || sigterm_received || timed_out())
2500 #ifdef ICL_KERNEL_PROXY
2502 client_salen = sizeof(client_sa);
2503 kernel_accept(&connection_id, &portal_id,
2504 (struct sockaddr *)&client_sa, &client_salen);
2505 assert(client_salen >= client_sa.ss_len);
2507 log_debugx("incoming connection, id %d, portal id %d",
2508 connection_id, portal_id);
2509 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
2510 TAILQ_FOREACH(portal, &pg->pg_portals, p_next) {
2511 if (portal->p_id == portal_id) {
2517 log_errx(1, "kernel returned invalid portal_id %d",
2521 handle_connection(portal, connection_id,
2522 (struct sockaddr *)&client_sa, dont_fork);
2525 assert(proxy_mode == false);
2529 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
2530 TAILQ_FOREACH(portal, &pg->pg_portals, p_next)
2531 nfds = fd_add(portal->p_socket, &fdset, nfds);
2533 error = select(nfds + 1, &fdset, NULL, NULL, NULL);
2537 log_err(1, "select");
2539 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
2540 TAILQ_FOREACH(portal, &pg->pg_portals, p_next) {
2541 if (!FD_ISSET(portal->p_socket, &fdset))
2543 client_salen = sizeof(client_sa);
2544 client_fd = accept(portal->p_socket,
2545 (struct sockaddr *)&client_sa,
2547 if (client_fd < 0) {
2548 if (errno == ECONNABORTED)
2550 log_err(1, "accept");
2552 assert(client_salen >= client_sa.ss_len);
2554 handle_connection(portal, client_fd,
2555 (struct sockaddr *)&client_sa,
2560 #ifdef ICL_KERNEL_PROXY
2567 sighup_handler(int dummy __unused)
2570 sighup_received = true;
2574 sigterm_handler(int dummy __unused)
2577 sigterm_received = true;
2581 sigchld_handler(int dummy __unused)
2585 * The only purpose of this handler is to make SIGCHLD
2586 * interrupt the ISCSIDWAIT ioctl(2), so we can call
2587 * wait_for_children().
2592 register_signals(void)
2594 struct sigaction sa;
2597 bzero(&sa, sizeof(sa));
2598 sa.sa_handler = sighup_handler;
2599 sigfillset(&sa.sa_mask);
2600 error = sigaction(SIGHUP, &sa, NULL);
2602 log_err(1, "sigaction");
2604 sa.sa_handler = sigterm_handler;
2605 error = sigaction(SIGTERM, &sa, NULL);
2607 log_err(1, "sigaction");
2609 sa.sa_handler = sigterm_handler;
2610 error = sigaction(SIGINT, &sa, NULL);
2612 log_err(1, "sigaction");
2614 sa.sa_handler = sigchld_handler;
2615 error = sigaction(SIGCHLD, &sa, NULL);
2617 log_err(1, "sigaction");
2621 check_perms(const char *path)
2626 error = stat(path, &sb);
2631 if (sb.st_mode & S_IWOTH) {
2632 log_warnx("%s is world-writable", path);
2633 } else if (sb.st_mode & S_IROTH) {
2634 log_warnx("%s is world-readable", path);
2635 } else if (sb.st_mode & S_IXOTH) {
2637 * Ok, this one doesn't matter, but still do it,
2638 * just for consistency.
2640 log_warnx("%s is world-executable", path);
2644 * XXX: Should we also check for owner != 0?
2648 static struct conf *
2649 conf_new_from_file(const char *path, struct conf *oldconf, bool ucl)
2652 struct auth_group *ag;
2653 struct portal_group *pg;
2657 log_debugx("obtaining configuration from %s", path);
2661 TAILQ_FOREACH(pp, &oldconf->conf_pports, pp_next)
2662 pport_copy(pp, conf);
2664 ag = auth_group_new(conf, "default");
2667 ag = auth_group_new(conf, "no-authentication");
2669 ag->ag_type = AG_TYPE_NO_AUTHENTICATION;
2671 ag = auth_group_new(conf, "no-access");
2673 ag->ag_type = AG_TYPE_DENY;
2675 pg = portal_group_new(conf, "default");
2679 error = uclparse_conf(conf, path);
2681 error = parse_conf(conf, path);
2690 if (conf->conf_default_ag_defined == false) {
2691 log_debugx("auth-group \"default\" not defined; "
2692 "going with defaults");
2693 ag = auth_group_find(conf, "default");
2695 ag->ag_type = AG_TYPE_DENY;
2698 if (conf->conf_default_pg_defined == false) {
2699 log_debugx("portal-group \"default\" not defined; "
2700 "going with defaults");
2701 pg = portal_group_find(conf, "default");
2703 portal_group_add_listen(pg, "0.0.0.0:3260", false);
2704 portal_group_add_listen(pg, "[::]:3260", false);
2707 conf->conf_kernel_port_on = true;
2709 error = conf_verify(conf);
2719 main(int argc, char **argv)
2721 struct conf *oldconf, *newconf, *tmpconf;
2723 const char *config_path = DEFAULT_CONFIG_PATH;
2724 int debug = 0, ch, error;
2725 bool dont_daemonize = false;
2726 bool test_config = false;
2727 bool use_ucl = false;
2729 while ((ch = getopt(argc, argv, "dtuf:R")) != -1) {
2732 dont_daemonize = true;
2742 config_path = optarg;
2745 #ifndef ICL_KERNEL_PROXY
2746 log_errx(1, "ctld(8) compiled without ICL_KERNEL_PROXY "
2747 "does not support iSER protocol");
2763 oldconf = conf_new_from_kernel();
2764 newconf = conf_new_from_file(config_path, oldconf, use_ucl);
2766 if (newconf == NULL)
2767 log_errx(1, "configuration error; exiting");
2773 oldconf->conf_debug = debug;
2774 newconf->conf_debug = debug;
2777 error = conf_apply(oldconf, newconf);
2779 log_errx(1, "failed to apply configuration; exiting");
2781 conf_delete(oldconf);
2786 if (dont_daemonize == false) {
2787 log_debugx("daemonizing");
2788 if (daemon(0, 0) == -1) {
2789 log_warn("cannot daemonize");
2790 pidfile_remove(newconf->conf_pidfh);
2795 /* Schedule iSNS update */
2796 if (!TAILQ_EMPTY(&newconf->conf_isns))
2797 set_timeout((newconf->conf_isns_period + 2) / 3, false);
2800 main_loop(newconf, dont_daemonize);
2801 if (sighup_received) {
2802 sighup_received = false;
2803 log_debugx("received SIGHUP, reloading configuration");
2804 tmpconf = conf_new_from_file(config_path, newconf,
2807 if (tmpconf == NULL) {
2808 log_warnx("configuration error, "
2809 "continuing with old configuration");
2812 tmpconf->conf_debug = debug;
2815 error = conf_apply(oldconf, newconf);
2817 log_warnx("failed to reload "
2819 conf_delete(oldconf);
2822 } else if (sigterm_received) {
2823 log_debugx("exiting on signal; "
2824 "reloading empty configuration");
2826 log_debugx("removing CTL iSCSI ports "
2827 "and terminating all connections");
2830 newconf = conf_new();
2832 newconf->conf_debug = debug;
2833 error = conf_apply(oldconf, newconf);
2835 log_warnx("failed to apply configuration");
2836 conf_delete(oldconf);
2839 log_warnx("exiting on signal");
2842 nchildren -= wait_for_children(false);
2843 assert(nchildren >= 0);
2845 set_timeout(0, false);
2846 TAILQ_FOREACH(newns, &newconf->conf_isns, i_next)
2848 /* Schedule iSNS update */
2849 if (!TAILQ_EMPTY(&newconf->conf_isns)) {
2850 set_timeout((newconf->conf_isns_period